Phosphoric acid esters

ABSTRACT

Dithiophosphates of the formula WHEREIN R1 and R2 represent alkyl radicals of up to four carbon atoms are effective pesticidal agents, preferably for combating insects, nematodes and members of the order Acarina. The dithiophosphates may be used in pesticidal preparations.

United States Patent [1 1 [iii 3,725,513

. FOREIGN PATENTS OR APPLICATIONS 8/1964 Great Britain., ..260/964 Beriger '51 Apr. '3, 197 3 I PHOSPI'IORIC ACID ESTERS Primary Examiner-Lewis Gotts 75 l ventor: Ernst Beri er, Neuall chw'l, Assis'am kaymond 1 n Switzerland g S l Att0rneyI-Iarry Goldsmith, Joseph G. Kolodny and v Mario A. Monaco [73] Assrg'nee: Ciba-Geigy AG, Basel, Switzerland [221 Filed: Apr. 27, 1910 [57,] AP T [211 APPL 32,41 Dithiophosphates of the formula [30] Foreign Application Priority Data OCH Z Apr. 28, 1969 Switzerland ..6444/69 fi P-S [52] 0.8. CI. "260/951, 260/970, 260/978,

424/217 [51] Int. Cl. ..C07f 9/08 [58] Field or Search .,..260/95l, 964 wherein i and represent alkyl radicals of p w 4 four carbon atoms are effective pesticidal agents, [56] R f n it d preferably for combating insects, nematodes .and

members of the order Acarina; The dithiophosphates may be used in pesti oidal preparations.

3 Claims, No Drawings A Euschongastia,

PHOSPHORIC ACID ESTERS OCH:

in which R, and R which may be the same or difierent,

each represents a straight chain or branched alkyl radical having from one to four carbon atoms.

The alkyl radicals represented by R and R in formula 1 include the methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl and the tert.butyl radicals.

The new phosphoric acid esters of formula I represent highly active substances for combatting insects in the broadest sense and pests of the order Acarina, including all their stages of development such as eggs, larvae and chrysales or pupae.

. The compounds of formula I can, for example, be used against all harmful insects, for example against aphids-such as the green peach aphid (Myzus persicae), the bean aphid (Doralis fabae); shield lice such as Aspidiotus hederae, Lecanium hesperidium, Pseudococcus maritimus; thysanoptera such as Hercinothrips femoralis, and bugs such as the beet bug (Piesma quadrata) or the bed bug (Cimex lectularius), butterfly caterpillars, such as Plutella maculipennis and Lymantira dispar; beetles such as the granary weevil (Calandra granaria) or Colorado beetle (Leptinotarsa decemlineata); but also soil-inhabiting varieties, such aswire worms (Agriotes sp.) or cockchafer grubs (Melolontha melolontha); orthoptera, such as the German cockroach (Blattella germanica) and the cricket (Gryllus domesticus); termites, such as Reticulitermes; hymenoptera such as ants; diptera, such as the vinegar fly (Drasophila melanogaster), the Mediterranean fruit fly (Ceratitis capitata) and the housefly (Musca domestica), and also gnats (for example Aedes aegypti and Anopheles stephensi).

The compounds of the formula I are also especially effective for combatting representativesof the order Acarina such as, for, example, Eulaelaps, Echinolaelaps, Laelaps, Haemogamasus, Dermanyssus, Ornithonyssus, and Allodermanyssus, especially Allodermanyssus sanguineus, Pneumonyssus, Amblyomma, Aponomma, Boophilus, Dermancentor, Haemophysalis, Hyalomma, Ixodidae, Margaropus, Rhipicephalus, Ornithodorus; Otobius, Cheyletidea, for example, Cheyletus, Psorergates, Demodicidae, Trombiculidae,=for example, Trombicula, Eutrombicula, Schiingastia, Acomatacurus, 'flee'schzsirgas'ria, Sarcoptiformes, for example, Notoedres, Sarcoptes, Knemidokoptes, Pso roptidae, for example, Psoroptes, Chorioptes, Otodectes or Tetranychidae, for example, Tetranychus telarius. or Tetranychus urticae.

The phosphoric acid esters of formula I are also active against phytopathogenic nematodes, such as Aphelenchoides, for example A. ritzemabosi, A. fragariae, and A. oryzae, varieties of Ditylenchus' such as D. Dipsaci, varieties of Meloidogyne such as M.

arenaria and M. incognito and varieties of Heterode ra such as H. rostochiensis and H. schachtii, and also varieq gredient, at least one phosphoric acid ester of the' general formula I, and, if desired, one or more appropriate carriers, for example, solvents, dispersing agents, wetting agents, adhesives, thickeners and, under certain circumstances, further pesticides.

If the pure active substances are applied as a smoke,

spray, mist or the like, their biocidal action manifests itself within an extremely short time in the case of, for

' example, midges, whilst in the case of other insects,

somewhat longer times, (up to about 1 hour) are found necessary until the action manifests itself.

The ovicidal activity of the compounds of formula I was investigated on the eggs of meal moths, cotton eggs were brought into contact with the active substance in the form of an emulsion. The active substances to be used according to the invention show a good ovicidal activity up to high dilutions, that is to say to about 0.01- percent relative to the active substance.

The acaricidal activity of the compound of formula I was tested on mites. A good action was found on tarsal contact.

The agents which contain the active substances of formula I can be applied in the most diverse manner, mainly in the form of aqueous sprays, dusting powders of granules.

Aqueous sprays can for example be produced on the basis of an emulsifiable concentrate or a wettable powder. A suitable emulsifiable concentrate can, for

example, be manufactured from about 25 parts of a compound of formula I, 40-50 parts of diacetone-al-' cohol or isophorone, 20-30 parts of an aromatic petroleum product, xylene, toluene or some other-mixture of such solvents, and 2-10 parts of one or more above. It is however also possible to use one or more other surface-active agents.

Depending on its appropriateness, an anionic, cationic or ionic emulsifier soluble in solvents can be used. Instead of the abovementioned non-ionic agent derived from an alkylphenol and ethylene oxide, it is also possible to employ ethylene condensates of longchain alcohols, carboxylic acids, phenols or amines. Non-ionic concentrates of polyglycerines and fatty acids or'of polyglycerines and a resin-forming acid such as phthalic acid can also be used in the manufacture of self-emulsifying preparations. Typical anionic agents are those based on alcohol sulphonates, alcohol sulphates or alcohol sulphosuccinates. Cationic surface-active substances soluble in solvents are, for example, oleyl-benzyldimethylammonium chloride, or dodecyl-benzyl-trimethylammonium chloride or bromide. For this it may be seen that the character of the emulsifier is in detail of no special significance, provided that it is soluble in the solution of the active substance in one or in several inert solvents.

A wettable powder can be obtained if an active substance of formula I is taken up in a volatile solvent such as for example acetone, brought together with a finely divided solid such as kaolin, pyrophyllite or diatomaceous earth, and the solvent evaporated. The powder is heated with small amounts of one or more wetting agents or dispersing agents. A typical composition for example consists of 20 parts of an active substance of formulal, 77.5 parts of one or more finely divided solids, 0.5 part of wetting agent, such as an octylphenoxy-polyethoxy-ethanol and 2 parts of the sodium salt of methylene-bis-naphthalenedisulphonic acid.

Dusts containing 5-10 percent of the active agent can be manufactured by diluting such a wettable powder with a finely divided solid carrier. Wetting agents or dispersing agents can optionally be added.

, Granules, such as are, say, used for combatting soil pests, are for example obtainable by dissolving an active substance of formula (I) in an organic solvent, applying the solution thus obtained to a granular mineral for example attapulgite, Si0,, granicalcium, bentonite and the like, and then again evaporating the organic solvent.

It is also possible to use polymer granules. They can be manufactured by mixing the active substances of formula I with polymerizable compounds (urea/formaldehyde, dicyandiamide/formaldehyde, melamine/formaldehyde or others), after which a mild polymerization is carried out which leaves the active substances unaffected, with the granulation being carried out whilst the gel formation is still proceeding. A more advantageous method is to impregnate finished, porous polymer granules (urea/formaldehyde, polyacrylonitrile, polyesters or others) having a certain surface area and an advantageous pre-determinable adsorption/ desorption ratio with the active substances, for example in the form of their solutions (in a low0boiling solvent) and to remove the solvent.

Such polymer granules, in the form of microgranules with bulk densities of, preferably, 300 g/liter to 600 g/liter, can also be applied by means of sprays. The spraying can be carried out over crops covering a large area with the aid of aircraft.

Of course further pesticides, fertilizers, surface-active agents or substances for increasing the specific gravity, such as BaSO can be added to the granules.

Granules are also obtainable compacting the carrier material with the active substances and additives and subsequent comminution.

In general, the pesticides according to the invention contain between 0.1 and 20 percent by weight of active substance of formula I in the case of more dilute agents,and between 20 and 98 percent by weight where concentrated agents are intended.

The action of the dithiophosphates according to the invention can be further increased by synergistic agents. Suitable materials for this purpose are, for expiperonyl-cyclonene,

ample, Sesamine, Sesamex, piperonyl-butoxide, piperonal-bis[2-(2-butoxyethoxy)ethyl]acetate, sulphoxide, propylisome N-(2-ethylhexyl)-5-norbornene-2,3dicarboxamide, octachlorodipropyl-ether, 2-nitrophenylpropargyl-ether, 4-chloro2-nitrophenyl-propargyI-ether and 2,4,5- trichlorophenyl-propargyl-ether.

The compounds of formula I can be combined with further insecticidal, acaricidal and/or nematocidal active substances for broadening the use spectrum. A series of examples are given below.

PHOSPI-IORIC ACID DERIVATIVES 0,0-Diethyl-S'-2-[(ethylthio)ethylldithiophosphate (DISULFOTON) 0,0-Dimethyl-S-2 (ethylsulphinyl ethylthiophosphate (OXYDEMETONMETHYL) 0,0-Dimethyl-S-( 1,2 dicarbethoxyethyl dithiophosphate (MALATHION) (0,0,0,0-Tetraeth-yl S,S'-methylene-bis-[ ithiophosphate] (ETHION) O-Ethyl-S,S-dipropyldithiophosphate 0,0-Dimethyl-S-(N methyl-N-formylcarbamoylmethy )-dithiophosphate (FORMOTION) 0,0-Dimethyl-S-(N methylcarbamoylmethyl dithiophosphate (DIMETI-IAT) 0,0-Dimethyl-S-(N ethylcarbamoylmethyl dithiophosohate (ETI-IOA'IMETHYL) 0,0-Diethyl-S-(N dithiophosphate PROTHOAT) (DICHLOR;

isopropylcarbamoylmethyl) S N (l Cyano 1 methylethyl)carbamoylmethyl diethylthiolphosphate (CYANTHOAT) S (2 Acetamidoethyl) O, O dimethyldithio phosphate Hexamethylphosphoric acid triamide (HEMPA) O, O Dimethyl O p nitrophenylthiophosphate (PARATHION-METHYL) O, O Diethyl O p nitrophenylthiophosphate (PARATHION) O Ethyl O p nitrophenylthiophosphonate (EPN) O, O Dimethyl O (4 nitro m tolyl)thiophos phate (FENITROTHION) O, O Dimethyl O (2 chloro 4 nitrophenyDthio phosphate (DICAPTHON) O, O Dimethyl -'O p cyanophenylthiophosphate (CYANOX) O Ethyl O p cyanophenylphenylthiophospho nate O, O Diethyl O 2, 4 dichlorophenylthiophos phate (DICHROFENTHION) O 2, 4 Dichlorophenyl O methylisopropyl amidothiophosphate O, O Dimethyl O 2, 4, 5 trichlorophenylthio phosphate (RONNEL) O Ethyl O 2, 4, 5 trichlorophenylethylthiophos phonate (T RICHLORONAT) O, O Dimethyl O 2, 5 dichloro 4 bromophenylv thiophosphate (BROMOPHOS) O, O Diethyl O 2, 5 dichloro 4 bromophenyl thiophosphate (BROMOPHOS-ETHYL) O, O Dimethyl O (2, 5 dichlor 4 iodophenyl) thiophosphate (IODOFENPHOS) 4 tert. Butyl 2 chlorophenyl N methyl O methylamidophosphate (CRUFOMAT) Dimethyl p (methylthio)phenylphosphate O, O Dimethyl O (3 methyl 4 methylmercaptophenyl)thiophosphate (FENTHION) Isopropylamino O ethyl O (4 Methylmereapto 3-methylphenyl)-phosphate O, O Diethyl O p [(methylsuIphinyDphenyl] thiophosphate (FENSULFOTHION) O, O Dimethyl O p sulphamidophenylthio phosphate 0 [p (Dimethylsulphamido)phenyl]O, O -'dimethyl thiophosphate (FAMPHUR) O, O, O, O Tetramethyl O, O thiodi p phenylenethiophosphate -O, O Dimethyl S (p chlorophenylthiomethyl) dithiophosphate O, O Diethyl p chlorophenylmercaptomethyl dithiophosphate (CARBOPHENOTHION) .O, O Diethyl S p ehlorophenylthiomethyl thiophosphate O, O Dimethyl S (carbethoxy phenylmethyl) dithiophosphate (PHEN OTHOAT) O, O-- Diethyl S (carbofluorethoxy phenylmethyl} dithiophosphate 0,0 Dimethyl S (carbisopropoxy-phenylmethyl) dithiophosphate O, O Dimethyl O (alpha methylbenzyl 3 hydtoxyerotonybphosphate,

2 Chloro 1 (2, 4 7 dichlorophenyDvinyl diethyl phosphate (CHLORFENVINPHOS) 2 Chloro l (2, 4, 5 trichlorophenyDvinyl di methylphosphate O (2 Chloro l (2, 5 dichlorophenyDvinyl O, O diethylthiophosphate Phenylglyoxylonitriloxime O, 0 diethylthio phosphate (PHOXIM) O, O 7 Diethyl O (3 chloro 4 methyl 2 0x0 2 H l benzopyran 7 yl) thiophosphate (COUMAPHOS) O, O Diethyl 7 hydroxy 3, 4 tetramethylene coumarinyl thiophosphate (COUMITHOAT) v 2, 3 p Dioxanedithiol S, S bis(O, O diethyl dithiophosphate) (DIOXATHION) 2 Methoxy 4 H l 3, 2 benzodioxaphosphorine 2 sulphide O, O Diethyl O (5 phenyl 3 isooxyzolyl (sic)) thiosphosphate Y S [(6 Chlor 2 oxo 3 benzoxazolinyl)methyl O, O diethyldithiophosphate (PHOSALON) 2 (Dietho-xyphosphinylimino) 4 methyl 2, 3 dithiolane O, O Dimethyl S [2 methoxy l, 3, 4 thiadia zol 5 (4H) onyl (4) methylldithiophosphate Tris (2 methyl l aziridinyl) phosphine oxide (METEPA) j 0, O Dimethyl S phthalimidomethyl dithio phosphate S (2 Chloro l phthalimidoethyl)'- O, O -'dieth yl dithiophosphate N Hydroxynaphtalimido diethylphosphate Dimethyl 3, 5, 6 trichloro 2 pyridylphosphate O, O Dimethyl O (3, 5, 6 trichloro 2 pyridyl) thiophosphate O, O Diethyl O (3, 5, 6 trichloro 2 pyridyl) thiophosphate O, O Diethyl O 2 pyrazinylthiophosphate (THION AZIN) O, O Diethyl O (2 isopropyl 4 methyl 6 pyrimidyl)thiophosphate (DIAZINON) O, O Diethyl O (2 quinoxylyl)thiophosphate O, O Dimethyl S (4 oxo l, 2, 3 benzotriazin 3(4H) ylmethyl) dithiophosphate (AZINPHOS- METHY L) O, O Diethyl S (4 oxo l, 2, 3 benzotriazin 3(4H) ylmethyl) dithiophosphate (AZINPHOS ETHYL) S [(4, 6 Diamino s triazin 2 yl)methyl] O,

O dimethyldithiophosphate (MEN AZON) S [2 (Ethylsulphonyl)ethyl]dimethylthiolphos phate (DIOXYDEMETON S METHYL) Diethyl S [2 (ethylsulphinyl)ethyl]dithiophos phate (OXYDISULFOTON) Bis O, O diethylthiophosphoric acid anhydride (SULFOTEP) Dimethyl l, 3 di(carbomethoxy) 1 propen 2 yl phosphate Dimethyl (2, 2, 2 trichloro 1 butyroyloxyethyl) phosphonate (BUTONAT) O, O Dimethyl O (2, 2 dichloro 1 methoxy vinyl)phosphate O, O Dimethyl O (3 chloro 4 nitrophenyl) thiophosphate (CHLORTHION) O, O Dimethyl O(or S) 2 (ethylthioethyl)thio phosphate (DEMETON-S-METHYL) Bis (dimethylamido)fiuorophosphate '(DIMEFOX) 2 (O, O Dimethyl phosphoryl thiomethyl) 5 methoxy pyrone 4 3, 4 Dichlorobenzyl triphenylphosphonium chloride Dimethyl N methoxymethylcarbamoylmethyl dithiophosphate (FORMOCARBAM) 0,0 Diethyl O (2, 2 dichloro 1 chlorethoxy vi'nyDphosphate O, O Dimethyl O (2, 2 dichloro 1 chlore thoxyvinyl)phosphate O Ethyl S, S diphenyldithiolphosphate O Ethyl S benzyl phenyldithiophosphonate O, O Diethyl S benzyl thiolphosphate O, O Dimethyl S (4 chlorophenylthiomethyl) dithiophosphate (METHYLCARBOPHENO THION) 0,0 Dimethyl S (ethylthiomethyDdithiophosphate Diisopropylaminofluorophosphate (MIPAFOX) O, O Dimethyl S (morpholinylcarbamoylmethyl) dithiophosphate (MORPHOTHION) Bismethylamido phenylphosphate O, O Dimethyl S (benzenesulphonyl)dithio phosphate 0, O Dimethyl (S and O) ethylsulphinylethyl thiophosphate O, O Diethyl O 4 nitrophenylphosphate O, O Diethyl S (2, 5 dichlorophenylthiomethyl) dithiophosphate (PHENDAPTON) Triethoxy iso propoxy bis (thiophosphinyhdisul phide O, O Diethyl O'- (4 methyl coumarinyl 7) thiophosphate (POTASAN) 2 Methoxy 4H 1, 3, 2 benzodioxaphosphorine 2 oxide Octamethylpyrophosphoramide (SCH RADAN) Bis' dimethoxythiophosphinylsulphido phenyl methane v5 Anino bis(dimethylamido)phosphinyl 3 phenyl 1, 2, 4 triazole (TRIAMIPHOS) N Methyl 5 (O, O dimethylthiolphosphoryl) 3 thiavaleramide (VAMIDOTHION) and N,N, N, N Tetramethyldiamidofluorophosphate (DIMEFOX) CARBAMIC ACID DERIVATIVES 2, 3 Dihydro 2, 2, dimethyl 7 benzofuranyl N methylcarbamate (CARBOFURAN) 2 Methyl 2 methylthio propionaldehyde O (methylcarbamoyl) 7 oxime (ALDICARB) 8 Q uinaldyl N methylca r bamate ahd its salts I Methyl 2 isopropyl 4 (methylcarbamoyloxy) carbanilate 4 r n (1 Ethylpropyhphenyl N methylcarbamate 3 ,S-Di-tert. Butyl-N-methylcarbamate m (l MethylbutyDphenyl N methylcarbamate 2-Isopropylphenyl-N-methylcarbamate 2-sec Butylphenyl-N-methylcarbamate m-Tolyl-N-methylcarbamate 2,3-Xylyl-N-methylcarbamate 3-Isopropylphenyl-N-methylcarbamate 3-tert. Butylphenyl-N-methylcarbamate 3-sec.-Butylphenyl-N-methylcarbamate 3 Isopropyl 5 methylphenyl N methylcarba mate (PROMECARB) 3,5-Diisopropylphenyl-N-methylcarbamate 2-Chlor-5-isopropylphenyl-N-methylcarbamate 2-Chlor-4,5-dimethy1phenyl-Nrmethylcarbamate 2 (1, 3 Dioxolan 2 yl)phenyl N methylcarba mate (DIOXYCARB) 2 (4, 5 Dimethyl 1, 3 dioxolan 2 yl)phenyl N-methylcarbamate 2 1, 3 Dioxan 2 yl)phenyl N methylcarbamate 2 (l, 3 Dithiolan 2 yl)phenyl N methyl carbamate 2 (1, 3 Dithiolan 2 yl)phenyl N, N dimethyl carbamate 2 Isopropoxyphenyl N methylcarbamate (ARPROCARB) 2 (2 Propinyl0xy)phenyl N methylcarbamate 2 (2 Propinyloxy)phenyl N methylcarbamate 3 (2 Propinyloxy)phenyl N methylcarbamate 2 Dimethylaminophenyl N methylcarbamate 2 Diallylaminophenyl N methylcarbamate 4 Diallylamino 3, 5 xylyl N methylcarbamate (ALLYXICARB) 4-Benzothienyl-N-methylcarbamate 2, 3 Dihydro 2 methyl 7 benzofuranyl N methylcarbamate 3 Methyl 1 phenylpyrazol 5 y] N, N di methylcarbamate 1 Isopropyl 3 methylpyrazol 5 yl N, N di methylcarbamate (ISOLAN) 2 (N N Dimethylcarbamoyl) 3 methylpyrazol S-yl-N ,N-dimethylcarbamate 2 Dimethylamino 5, 6 dimethylpyrimidin 4 yl N,N-dimethy1carbamate 3 Methyl 4 dimethylaminomethyleneiminophenyl- N-methylcarbamate 3 Dimethylamino methyleneiminophenyl N methylcarbamate l Methylthio ethylimino N methylcarbamate 1, 3 Bis(carbamoylthio) 2 (N, N dimet hylamino) propane hydrochloride 5.5-Dimethylhydroresorcinoldimethylcarbnmate 3 Methyl 4 [dipropargylamino1- phenyl N methylcarbamate 3, 5 Dimethyl 4 [dipropargylamino] phenyl N methylcarbamate 3 -2 [Allyl isopropylaminolphenyl N methylcarbamate and 3 [Allyl isopropylamino] phenyl N methylcarbamate.

- CH LORIN AT ED HYDROCARBONS y-flexachlorocyclohexane [Gammexane; Lindane; y

1,2, 4, 5, 6, 7, 8, 8-Octachloro-3a, 4, 7, 7a-tetrahydro-4,7-methyleneindane [Chlordan] l, 4, 5, 6, 7, 8, 8-Heptachloro-3a, 4, 7, 7a-tetrahydro- 4,7-methyleneindane [Heptachlor] l, 2,3, 4, l0, IO-Hexachloro-l 4, 4a, 5, 8, 8a-hexahydro-endo-l, 4-exo-5 8-dimethanonaphthalene [Aldrin] a 1, 2, 3, 4, 10,10-Hexachlor-6, 7-epoxy-l, 4, 4a, 5,6,

7, 8, 8a, 9-octahydro-exo-1 4-endo-5, S-dimethanonaphthalene [Dieldrin] ditto,'endo-endo- [Endn'n] 6, 7, 8, 9, 10,-10-Hexachloro-l, 5, 5a, 6, 9, 9a-hexahydro-6, 9-methano-2, 3, 4 benz0[e]-dioxa-thiepene-3- oxide [Endosulfan] Chlorinated camphor [Toxaphen] dlpentalen-2-one Dodecachloroctahydro-l 3 4-metheno-1H-cyclobuta[c d]pentalene [Mirex] Ethyl-1,101, 3, 3a, 4, 5, 5a, 5a, 6-decachloroctahydro- Z-hydroxy-l, 3, 4-metheno-1H-eyc1obuta[cd]penta'lene-2-laevulinate Bis(pentachloro-2,4-cyclopentadienl-yl) Dinoctone-o NITROPHENOLS AND DERIVATIVES 4,6-Dinitro-6-methylphenol Na salt [dinitrocresol] Dinitrobutylphenol-2,2',2"-triethanolamine salt 2-Cyclohexyl-4,6-dinitrophenol [Dinexl 2-(l-Methylheptyl)-4, 6-dinitrophenyl-crotonate [Dinocap] l-Trichloro-Z, 2 bis(p-methoxyphenyhethane l0 '2 sec.-Butyl-4, 6-dinitrophenyl-3-methyl-butenoate [Binapacryl] 2 sec. Butyl 4, 6 dinitrophen yl cyclopropionate 1 and 5 2 sec. Butyl 4,6 dinitrophenyl isopropyl carbonate [Dinobuton] I VARIOUS SUBSTANCES 1O Sabadilla Rotenon Cevadin Veratridin Ryania Pyrethrin v v 3' Allyl 2 methyl 4 oxo 2 cyclopenten l yl chrysanthemumate (Allethrin) v I 6 Chlorop'iperonyl chrysanthemumate (Barthrin) 2, 4 Dimethylb'enzyl chrysanthemumate (Dimethrin) 2, 3,4, 5 Tetrahydrophthalimidomethyl chrysanthemumate 3 (2 methylpropanyl) cyclopropanecarboxylate Nicotine Bacillus thuringiensis Berliner Dicyelohexylcarbodiimidev Diphenyldiimide [azobenzene] I 4 Chlorobenzyl 4 chlorophenylsulphide [Chlorbensid] Creosote oil i 6 Methyl 2 oxo l, 3 dithiolo [4, 5 b] qum oxaline [Quinomethionat] (I) 3 (2 Furfuryl) 2 methyl 4 oxocyelopent 21- enyl(I) (cis trans)chrysanthemum mono carboxylate [Furethrin] 2 Pivaloyl indane 1, 3 dione [Pindon] 2 Fluorethyl(4-bisphenyl)acetate 40 2-Fluoro-N-methyl-N 1 -naphthyl)-acetamide Pentachlorophenol and salts 2,2, 2 Trichloro' N (pent'achlorophenyl) acetimidoyl chloride N (4 Chloro 2 methylphenyl) N,'N .d1

methylformamidine (Chlorphenamidine) 4 Chlorobenzyl 4 fluorophenyl sulphide (Fluorobenside) 5, 6 Dic-hloro l phenoxycarbanyl 2 trifluoromethyl benzimidazole (Fenozaflor) Tricyclohexyl tin hydroxide 2 Thiocyanatoethyl lauric acid ester B Butoxy B thiocyanatodiethyl ether Isobornyl thiocyanatoacetate p-Chlorophenyl p chlorobenzenesulphonate (O ex) a 2, 4 Dichlorophenyl benzenesulphonate p Chlorophenyl benzenesulphonate (Fenson) p Chlorophenyl 2, 4, 5 triehlorophenylsulphone (Tetradifon) p Chlorophenyl- 2, 4, 5 trichlorophenylsulphide (Tetrasul) Methyl bromide p- Chlorophenyl phenylsulphone 65 p Chlorobenzyl p,- chlorophenylsulphide (Chlorobenside) 4 Chlorophenyl 2, 4, 5 trichlorophe'nylazo sulphide (5 Benzyl 3 furyl) methyl 2, 2 dimethyl quinox) 2 Thio 1, 3 dithiolo (4, 5 6)quinoxaline (Thioquinox) Chloromethyl p chlorophenylsulphone (lauseto new) 1, 3, 6, 8 Tetranitrocarbazole and Prop 2 ynyl (4 t butylphenoxy) cyclohexylsulphite (Propargil).

The compounds of formula 1 can be manufactured in the customary manner from a 0,0-dialkylthiolphosphite together with the corresponding arylsulphenic acid-chloride in accordance with CHaO R10 S l -H c1 sor from 2-methoxy-5-chlorophenyl-dichloro-dithio' phosphate by replacing the two chlorine atoms present on the P-atom by the substitutents R1O or R O-- by reaction with the appropriate alcoholate Met OR, or successively with the alcoholates Met R and Met 0R2 in the presence of an acid acceptor. Met" is here intended to denote an alkali metal such as Na or K.

The compounds of the present invention are, however, preferably prepared by the following process.

The present invention also provides a process for the manufacture of the new phosphoric acid esters of formula I, whereina salt of a dithiophosphoric acid ester of the formula in which R and R which may be the same or differ ent, each represents a straight chain or branched alkyl radical having from 1 to 4 carbon atoms and M represents a metal atom, preferably an alkali metal atom, for example Na or K, is treated with diazotised 2-methoxy--chloraniline in a two-phase system at a temperature offrom to 100C, preferably from to 70C.

The reaction is catalysed by copper. By a two-phase system there is herein meant an aqueous solution together with a further layer of an organic solvent, which is immiscible with water. Possible solvents of this nature are ether, chloroform, methylene chloride, ethylene chloride, petroleum ether, benzene, toluene, xylene, chlorobenzene, dichlorobenzene, nitrobenzene and others.

This reaction is generally applicable to the manufacture of 0,0-dialkyl-S-aryl-dithiophosphoric acid esters.

The present invention therefore provides a general process for the manufacture of compounds of the formula in which Kw andKw each represent a hydrocarbon radical and Aryl represents an unsubstituted or substituted aryl radical, wherein a salt of a dithiophosphoric acid ester of the formula in which M represents a metal atom, preferably an alkali metal atom, for example, Na or K, is treated with a diazotised aromatic amine, which may be substituted in any desired manner, in a two-phase system of water and a water-insoluble organic component, at a temperature of from 10 to 100C, preferably from 20 to C, and preferably in the presence of copper as a catalyst.

Possible organic water-insoluble components are ether, chloroform, methylene chloride, ethylene chloride, petroleum ether, benzene, toluene, xylene, chlorobenzene, dichlorobenzene, nitrobenzene and others.

The process of the present invention is especially suitable for the manufacture of compounds of the formula V AlkylO in which Alkyl and alkyl each represents a lower alkyl group having at most 4 carbon atoms, n is a number from O to 5 and Z denotes a number, determined by n,

of identical or different substituents from the following group: halogen, aliphat, substituted amino groups, ester, carboxylic acid, carbonamide, hydroxyl, sulphonic acid and optionally substituted sulphonamide.

Here aliphat is understood to mean hydrocarbon chains with one or more chain members containing C, which are optionally interrupted by hetero atoms for example, 0, N 'or s,"stibatuiefjy a phenyl ring or by halogen atoms, or bonded to the phenyl nucleus of formula V via 0, N or S.

Preferably, those compounds of formula V are manufactured in which n represents a number from 0 to 3, with two substituents Z occupying the 2,3-, 3,4-, 3,5-, 2,4-, 2,5- or 2,6-position and three substituents preferably Occupying the 2,4,5-, the 2,4,6- or the 3,4,5- position.

The following examples illustrate the invention, the parts being by weight.

EXAMPLE 1 31.5 parts of 4-chlor-2-anisidine in 200 parts by volume of water are converted into the hydrochloride with 60 parts by volume of concentrated hydrochloric acid and diazotised in the customary manner with 14 parts of sodium nitrite in 60 parts by volume of water.

. Thereafter nitrogen is still passed through the solution 50C for 2'hours. After cooling, the aqueous phase is separated off and the organic solution is twice extracted with 50 parts 'by volume. of l N sodium hydroxide solution at a time. After drying over sodium sulphate and evaporating off the solvent in vacuo at 40-50C bath temperature, 63 parts of the phosphoric acid ester of the following formula OCHa . ll (C2HsO)zP-S melting point from methanol, 7677C are obtained. (Active substance No. 1) LD50 13.0. 370 mg of active substance/kg of body weight (rat).

' The dimethyl ester of formula H (crnohr-s melting point 78"-79 C can beobtained analogously. (Active substance No. 2) LD50 p.o. 6,000 mg of active substance] kg of body weight (rat).

The following compounds can be manufactured analogously: I

No a ocu,

nC;H S ll PS n0 H 0 a 1 I /l 1117 1-5582 No. 4 OCH CH;O S a S C H O N0. 5 CH O CH;0 S \ll P-S iso C H O II in) 1. 5798 FORMULATION EXAMPLES 2T0 5 2. DUSTING AGENTS Equal parts of an active substance and of precipitatedsilica are finely ground. Dusting agents preferably containing 1-6 percent of active substance can betariianufactured therefrom by mixing with kaolin or c.

l4 3. sPRAfiN'dPowDERs In order to manufacture a spraying powder which is soluble in water, the following components are mixed and finely ground: 50 parts of active substance according to the present invention 7 parts of Hisil (highly adsorbentsili a) v '25 parts of Bolus dlb dfkaoliif) 1.5 parts of sodium 1 benzyl 2 steryl benzimi dazole 6, 3' disulphonate and 3.5 parts of a reaction product of p-tert.octylphenol and ethylene oxide.

4. EMULSION CONCENTRATES I a. 40 parts of an active substance of formula I are mixed with 10 parts of a mixture of an anionic surface-active compound, preferably the calcium or magnesium salt of monolauryl benzene monosulphonic acid and of a non-ionic surface-active compound, preferably a polyethylene glycol ether of monosorbitol-laurate, and the whole is dissolved. in a little xylene. The mixture is made up to ccs with xylene and a clear solution is thus obtained, which can be used as a spraying agent concentrate and which gives a stable emulsion by pouring into water.

b. Easily soluble active susstanes" can also be formulated as an emulsion concentrate in accordance with the following instruction:

water tothe desired concentration, a sprayable emulsion is produced.

5. GRANULES a. 7.5 g of one of the active substances of formula I are dissolved in 100 ml of acetone and the acetone solution thus obtained is added to 92 g of granular attapulgite (mesh width: 24/48 meshes/inch). The whole is well mixed and the solvent is stripped off in a rotary evaporator. Granules containing 7.5 percent of active substance are obtained.

b. In order to manufacture 10 percent strength polymer granules, 1,050 to 1,100 g of technical quality active substance of formula .I are dissolved in 2 litres of trichlorethylene and sprayed in a fluidised bed granulator, under 1.5 atmospheres gauge spraying pressure, onto 9,230 g of initially introduced porous urea/HCHO granules. The solvent can again be removed by heating the fluidising air to about 50". C.

c. In' order to manufacture 7.5 percent strength weighted granules, 770 g of a solid industrial quality active substance of formula I, 500 g of BaSOi, 1,000 g of urea and 7,730 g of powdery porous polyacrylonitrile are pressed together on a roll mill and subsequently broken up to the desired particle size.

' BIOLOGICAL EXAMPLES 6 & 7

6. ACTION AGAINST ACARINA' A. 5 adult hungryv ticks (-Rhipicephalus bursa) were counted out into a glass test tube and dipped for l minute into 2 ml of an aqueous solution of Compound No. l. The test tube was closed with a standard cottonwool pad and then inverted in order to allow the solution of the active substance to be taken up by the cottonwool. The evaluation took place after 2 weeks. Complete destruction was achieved with 0.01 percent of active substance.

B. Fully gorged females of the variety Boophilus microplus were treated in accordance with the experimental method described under A. The evaluation took place after 4 weeks. Complete destruction was achieved with 0.02 percent of active substance of Compound No. 1. I

ACTION AGAINST SPIDER MITES Bush bean plants (Phaseolus vulgaris) in the twoleaf stage were infected, with spider mites 12 hours before the treatment with the active substance by placing attacked pieces of leaf from a culture on them, so that after the end of this time a population in all stages of development was present on the plant. The plants were then sprayed with the emulsified active substance with the aid of a chromatography atomiser, until a uniform deposit of droplets was produced on the surface of the leaf. Evaluation took place after 7 days: the parts of the plant were inspected under a stereo-microscope in order to calculate the destruction percentages.

The table which follows gives the destruction percentages for the normally sensitive variety Tetranychus 'urticae (Koch) and for the OP-resistant variety Tetranychus telarius, after treatment with Compound No. 1.

A. ACTION AGAINST TETR. URTICAE DESTRUCTION After 2 days After 7 days Conc. [ppm] Larvae Adults Eggs Larvae Adults 800 100 100 80 100 100 400 I I00 80 100 I00 200 I00 I00 60 80 I00 I00 I00 I00 0 0 80 B. ACTION AGAINST TETR. TELARIUS DESTRUCTION After 2 days After 7 days Conc. [ppm] Larvae Adults Eggs Larvae Adults 800 100 I00 80 100 I00 400 I00 I00 80 80 I00 200 80 80 60 80 I00 I00 60 0 0 0 80 7. ACTION AGAINST INSECTS A. The action of the experimental preparations on aphids was investigated using Aphis fabae on Vicia faba. Plants which had been extensively attacked were sprayed from all sides (contact) or only sprayed from above in the direction of the axis of the shoot, so that the experimental animals sitting under the faces of the leaf were not directly struck by the spray jet (penetration). The evaluation took place after 2 days using a hand magnifying glass. If complete destruction had occurred, the plant was again infested and investigated after a further 3 days.

Thedestruction is given in percent:

CONTACT Penetration Compound Conc. After After after [ppm] 2 days 5 days 2 days I 800 I00 400 100 60 100 200 100 60- 60 100 I00 60 2 800 I00 I00 I00 400 I00 60 80 200 I00 60 I00 80 not tested.

B. The test with Epilachna varivestis, the Mexican bean bug, was carried out as follows: 45 seedlings of Phaseolus vulgaris in the primary leaf stage, grown in a flowerpot, were dipped into emulsions of the experimental preparations and subsequently allowed to dry. The experimental animals, L-4 stages of the bug, were introduced into a conical cellophane bag, which was subsequently fastened over the treated plant by means of a rubber band. The action resulting from the treatment was determined after 5 days.

Destruction Compound No. Conc. [ppm] in percent I 800 I00 400 100 1. A compound of the formula OCH;

in which R and R2, which may be the same or different, each represents a straight chained or branched alkyl radical having from one to four carbon atoms.

2. The compound of the formula 0 CH; CHQO CH O as claimed in claim 1.

3. The compound ofthe formula as claimed in claim 1. 

2. The compound of the formula as claimed in claim
 1. 3. The compound of the formula as claimed in claim
 1. 